4 Ways to Enter the Whirlpool Duet Washer Diagnostic Mode

When it comes to the Whirlpool duet washer, there is no more straightforward and more conclusive way to identify an unapparent fault than to put the washer on self-test or diagnostic mode. So, the question is, how do you enter the Whirlpool duet washer diagnostic mode? 

You can enter a Whirlpool duet washer into diagnostic mode by pressing a combination of three keys other than POWER, START, STOP, CANCEL, or CONTROL LOCK for 2 – 5 seconds. You then release the keys for the same period and repeat the sequence thrice.

Overall, the identity of the key you skip depends on the type of duet washer, and as you’ll notice, that’s the same thing you’ll press the exit the self-test mode. For example, if you have a front loader duet, you can press any three keys as long as there is no POWER button, but you’ll need to press POWER to exit diagnostic mode.

Remember you are exiting after noting down the fault code on display if any. After that, the fault code should help you troubleshoot the washer, and I will help you do it. 

I’ll also share specific fault codes that may pop up when you put your duet washer on diagnostic. But besides the error codes, we will look at some diagnostic codes which indicate that your washer is already on self-test and suggest that your washer is already on self-test.

Let’s jump straight into it!

Whirlpool duet washer diagnostic mode

In a rush? Check out the quick summary for the various Whirlpool duet washing machine diagnostic mode techniques. 

Whirlpool Duet Washer Diagnostic Mode Quick Guide

OptionDiagnostic TechniqueExit TechniquePreferred Duet Washer
Option 1Press any keys beside POWER for 2 – 5 seconds three times Press POWER three times Whirlpool Front load duet washer
Option 2Press any three keys besides CONTROL LOCK, STOP or CANCEL for 2– 5 seconds three times Press STOP/CANCEL Whirlpool Front load duet washer
Option 3Press any three keys besides pause/cancel for 2 – 5 seconds three times Press PAUSE/CANCEL Whirlpool Duet sport washer
Option 4Close the door and select ON/CONTROL, DRAIN/SPIN, NO SPIN, and PRE WASH/EXTRA RINSE (4 times)Press CANCEL/POWER Any Whirlpool duet washer

Discussed How to Put Your Whirlpool Duet Washer into Diagnostic Mode

Before diagnosing your duet washer, consider the washer type, as the techniques may vary. 

In light of that, I’ll share how to put a front load and sport duet washer on diagnostic mode and one extra technique that could work for either washing machine.

Option 1 (Best for Putting a Whirlpool Front Load Washer On Diagnostic Mode)

If you have a front-loading duet washer, consider these steps to enter the diagnostic:

  • Select a set of three keys, and none should be the POWER button
  • Poke and hold down each of the keys for 2 – 5 seconds 
  • Repeat the poking sequence three times to enter diagnostic 
  • Wait to see if there will be any error codes flashing and note them down 
  • Poke the POWER button three times to exit diagnostic mode 

Option 2 (Alternative Choice for Whirlpool Front Loader Duet Washer)

You can also put a Whirlpool duet front loader on the diagnostic mode by avoiding the CONTROL LOCK, STOP and CANCEL buttons which you can use to exit the mode. Here’s how to go about it:

  • Locate any three keys besides CONTROL LOCK, STOP, or CANCEL
  • Hold the keys down for 2 – 5 seconds and release them 
  • Repeat the sequence three times to force the washer into diagnostic 
  • Note any fault codes that may pop up 
  • Press STOP/CANCEL to exit diagnostic mode 

Option 3 (Best for Putting the Whirlpool Duet Sport Washer in Diagnostic Mode)

Consider these steps if you want to enter a whirlpool duet sport washer into diagnostic mode:

  • First, choose the washer door 
  • Locate a set of three keys besides PAUSE/CANCEL and hold them down for 2 – 5 seconds 
  • Repeat the pressing three times to force the duet washer into self-test
  • Note any codes that come to display
  • Press PAUSE/CANCEL to exit the self-test program

Note, however, that this technique doesn’t force the washer into diagnostic mode right away. The washer enters the service history mode, showing you its error history before diagnostic mode.

You can, however, bypass the history mode by following these steps:

  • First, empty the washer drum and then shut the door 
  • Press the POWER button and choose CLEAN WASHER
  • Then pick EXTRA RINSE from the cycle options and press it four times for not more than 5 seconds 
  • Tap EXTRA RINSE once again to move to the next step (diagnostic mode)
  • If the technique is unsuccessful, press PAUSE/CANCEL and repeat it. 

Option 4 (Best for Any Duet Washer)

You can also consider this technique regardless of the type of Whirlpool duet washer you have:

  • Start by shutting the washer door
  • Select ON/CONTROL on the washer and then DRAIN/SPIN
  • Then select NO SPIN, and lastly PRE WASH/EXTRA RINSE (4 times)

Whirlpool Diagnostic Mode Codes and Their Action Indication

A Whirlpool duet washer typically displays some codes when the diagnostic program starts to indicate the status of the washer. Unlike the ones I’ll share next, these codes don’t mean a fault and here’s a table overview.

CodeAction Checked Part 
C:00Locked washer door Door lock 
C:01An opening cold water valve Cold water inlet valve and flow meter 
C:02Detergent distributor assuming prewash position Dispenser motor 
C:03An opening hot water valve Hot water valve 
C:04Rotating clockwise washer basket MCU control and washer motor 
C:05Turned-on heater, rotating basket, or opening water valve Temperature sensor and water heater 
C:06Turned-on drain pump Drain pump 
C:07Rotating (anticlockwise) washer basket at 35 – 90 rpmMCU control and washer motor 
C:08Rotating (anticlockwise) washer basket at 800 – 1000 rpmMCU control and washer motor 

Whirlpool Duet Washer Diagnostic Test Mode Error Codes

Let’s now talk about the fault codes you noted after entering your duet washer into diagnostic mode. The commonest ones include the following:

1. SUDs/SD 

SUDs are likely to appear if there are excess suds in the drum. That usually happens when you use excess detergent or apply a non-high-efficiency option. 

Fix – First, drain your washing machine and properly clean it before choosing a new cycle. Then put the detergent in moderation and ensure you only use a high efficiency (HE) option. 

2. Int

The error code pops up when you pause or cancel a running cycle. It may, however, take up to 20 – 30 minutes before the washer pauses and displays the fault code. 

 Fix – Press pause/cancel once and power twice to clear the error code. And if the error code won’t stop, unplugs the washer for at least 1 minute. 

3. F0E1

The error code F0E1 shows detected laundry in the drum, which you probably can’t notice unless you check keenly. 

Fix – Stop the washer, check for any trapped laundry, and remove it. 

4. F1E1

The code F1E1 shows up when there’s an issue with the main control board. It, however, doesn’t necessarily mean that the main control board is dead. The washer might need a reset. 

Fix – Unplug the washer for at least 1 minute to reset the error code. If the error code won’t go, it’s highly likely the main control board is defective and will thus need a replacement which an expert can help you with. 

5. F1E2

The error code F1E2 typically suggests an issue with the motor control. It could be that the motor control board is dead or needs a reset. 

Fix – Unplug the washer for 1 minute or more to reset it, but if the error code won’t disappear, the motor control board is likely defective, so you should replace it. 

how to put your Whirlpool duet washer into diagnostic mode

6. rL/F34

The error code rL/F34 typically indicates foreign items in the washer. So, you must inspect the drum to see if there’s anything foreign and remove it. 

Fix – Stop the washer, check for foreign items in the drum, and take it out. Then restart the washer picking a new cycle. 

7. F2E2

The error code F2E2 shows a cycle fault. It’s a rare error that pops up if there’s a control board connection failure. 

Fix – Inspect the main control board’s connection to identify faults. If the connections are defective, replace them. 

8. F3E1

The error code F3E1 mainly indicates a pressure sensor/switch fault. In most cases, the pressure sensor won’t sense the pressure level due to a blockage in the hose. But still, the error code may pop up if the pressure switch is faulty. 

Fix – Check for possible blockage in the pressure sensing hose and clear it and if the pressure switch does not have continuity (if you test it with a multimeter), replace it. 

9. F5E2

The error code F5E2 indicates a problem with the door lock, which you should inspect. 

Fix – Test the door lock with a multimeter. If it lacks continuity, replace it. 

10. F5E3

The error code F5E3 pops up when the door won’t lock properly, perhaps due to an obstruction or a faulty door switch. 

Fix – Remove any obstructions from the washer door and try locking it. If it doesn’t, inspect the door switch and replace it if it looks damaged or lacks continuity. 

11. F6E2/F6E3

The error code F6E2 or F6E3 shows up mostly when there’s a communication failure between the washer monitor and the control board. The cause could be faulty wiring. 

Fix – Call a pro to check for faulty wiring and fix the connections. 

12. F7E1

The error code F7E1 pops up when there’s a motor speed-sensing fault. In that case, the motor can’t attain the correct cycle speed. 

Fix – Ensure the washer is not overloaded. If it is, reduce the load to ¾. Also, check for any loose shipping bolts and remove them and then press pause/cancel (twice) + power (once) to clear the error. 

Whirlpool duet washer diagnostic test mode

People Also Ask 

1. How Do I Put My Whirlpool Washer in Diagnostic Mode?

You can put your Whirlpool washer in diagnostic mode by pressing three keys other than POWER, PAUSE, CANCEL or START for 2 -5 seconds and repeat the sequence about thrice. 

That allows you to identify fault codes that indicate a problem with your Whirlpool washer. 

2. How Do I Reset a Whirlpool Duet Washing Machine?

The easiest way to manually reset a whirlpool duet washer is to unplug it for at least 1 minute. If that doesn’t work, first rotate the dial until the RINSE + WASH + STOP buttons illuminate, after which you can unplug the washer for at least 10 seconds before plugging back in and restarting it. 

3. How Do I Run Diagnostic On My Whirlpool Duet Front Load Washer?

You can run a diagnostic or self-test on a Whirlpool duet front load washer by pressing any three keys other than POWER three times. You should hold down the buttons for 2 –5 seconds before releasing them. 

What other options does the user consider if the new CCU does not solve the issue?

If the new CCU does not resolve the issue, the user contemplates reaching out to Whirlpool for further assistance. They acknowledge that they are uncertain about the subsequent steps to be taken, highlighting that their next course of action might involve inspecting the new MCU.

What other part did the user order to potentially fix the new problem?

The user ordered a new CCU (Central Control Unit) in the hopes that it would solve the problem they were facing. They are now waiting for the arrival of the new CCU, hoping that it is indeed the part that will fix the issue they are experiencing.

Was the MCU box damaged or defective?

“I apologize for any confusion caused. To address your concern, I would like to provide some helpful information. When purchasing the MCU from RepairClinic, it is important to verify whether the box it arrived in was damaged or not. Ensuring that the box is in good condition helps ensure the integrity of the MCU inside. Additionally, double tapping is another important aspect to consider when installing the MCU. If the MCU is improperly double tapped, it may lead to further issues. However, if the new MCU was installed correctly and you are still experiencing problems that were not present before, it is possible that the MCU itself might be defective. I suggest thoroughly checking the condition of the box and ensuring proper installation to troubleshoot the situation effectively.”

Did the user buy the MCU from RepairClinic?

“Can you please confirm if you purchased the MCU from RepairClinic? Additionally, could you provide some information about the condition of the box it came in? I’m asking this because a damaged box could potentially indicate mishandling during shipping. Moreover, it would be helpful to know if the MCU was double tapped or not. I have dealt with similar error codes in the past, and generally, replacing the MCU has resolved the issue. However, in your case, it seems strange that new problems have emerged after installing the new MCU. One possibility could be that the MCU you received is defective. It would be worth exploring this possibility to eliminate any potential manufacturing issues.”

Does the user have any recommendations for sourcing the replacement part?

Based on the provided information, the user mentions that they clicked on a link to but unfortunately, the item they are looking for is out of stock. As a result, they are seeking an alternative recommendation for sourcing the replacement part. The user expresses a preference for using a recommended parts supplier and mentions that supporting small businesses, especially during this challenging year, is important to them. While they acknowledge the option to search through Google, they specifically seek suggestions from a reliable parts supplier or a small business if possible.

What troubleshooting steps did the user try before considering replacing the MCU?

Before considering replacing the MCU, the user mentioned that they have already tried all of the other troubleshooting steps outlined in the manual. Although the manual did not provide an extensive list of troubleshooting options, the user attempted all the recommended steps. Additionally, they mentioned that their resourceful spouse, who seems to possess good handyman skills, is confident in their ability to swap out the MCU if needed.

Is it possible that the bearings are going bad in the washing machine?

Considering the symptoms you are experiencing with your washing machine, it is indeed possible that the bearings in the machine might be going bad. In a properly functioning washing machine, it should not be noisy during the spin cycle. Noises during this cycle are commonly associated with deteriorating bearings. Therefore, it is crucial to address this potential issue along with the current problems you are encountering, as fixing the other issues without addressing the bearings could result in further complications.

Could a bad CCU be responsible for the communication error and other issues?

Based on my experience with Duet washers, I have encountered several instances where a ‘communications error’ was caused by a faulty MCU (motor control unit). It is important to visually inspect the MCU board for any obvious signs of damage, such as burn marks. While a clean-looking board does not necessarily indicate it is functioning properly, a burnt board is a clear indication of a bad MCU.

During a cycle, the Duet washer undergoes various tests, including a door lock/unlock test, and slight movement of the tub back and forth. Some sources suggest that if the tub moves during this test, it indicates that the MCU, motor, and harness are functioning properly, and that the communication error or wiring issues are likely caused by a faulty CCU (central control unit). However, I have never personally confirmed this, as all my communication errors were determined to be a result of a defective CCU, never a faulty MCU.

In addition to the communication error, it is concerning that the pump did not engage during the C00 test. This may further suggest that a faulty CCU could be the root cause of all the issues mentioned.

Therefore, based on the information provided and my experience, it is possible that a bad CCU is responsible for the communication error and other related problems. Conducting a visual inspection of the MCU board and considering the lack of pump engagement during the C00 test could help confirm whether replacing the CCU would be a suitable solution.

What could be the reason for a long pause in cold fill during diagnostics mode?

The reason for a long pause in cold fill during diagnostics mode could potentially be related to multiple causes. One possibility is a malfunctioning CCU (Central Control Unit), which may result in the pump failing to engage during the cold fill process. If this is the case, resolving the communications error that triggered the diagnostics mode might not completely resolve the issue, as there could still be a separate problem with the cold fill mechanism.

Additionally, the cold fill pause could be an indication that a specific problem has been detected by the diagnostics mode, preventing the system from proceeding to the next step (C03). This suggests that there may be an additional underlying issue contributing to the pause during cold fill.

Therefore, it is essential to address both the potential communication error causing the diagnostics mode and investigate any separate problems with the cold fill mechanism in order to fully resolve the issues at hand.

What could be causing a burnt spot on the MCU circuit board?

A burnt spot on the MCU circuit board can be caused by various factors. One possible cause could be a short circuit, where an electrical current deviates from its intended path and causes excessive heat to build up in a specific area, resulting in a burnt spot. Other potential causes could include power surges or fluctuations, faulty components or connections, improper voltage or current levels, inadequate cooling or ventilation, or even manufacturing defects. It is important to thoroughly inspect the circuit board and surrounding components for any signs of damage or malfunctions that could contribute to the burnt spot.

Could a faulty MCU or communication issue between the MCU and CCU prevent the drain pump from turning on in diagnostic mode?

According to a discussion between gototcm and rickgburton, the question of whether a faulty MCU or communication issue between the MCU and CCU could prevent the drain pump from turning on in diagnostic mode is raised. Rickgburton responds by stating that if there is a problem with the communication between the MCU and CCU or if the MCU itself has failed, it would not necessarily impact the functionality of the drain pump in diagnostic mode (C00). Instead, the response suggests that the communication being discussed refers to the communication between the CCU and the pump, indicating that the drain pump could still operate correctly even if there are issues with the MCU or its communication with the CCU.

How can I check if the motor windings are functioning properly?

To check if the motor windings are functioning properly, follow these steps:

1. Start by disconnecting the motor harness connector from the Motor Control Unit (MCU).
2. Using a multimeter, set it to the resistance (Ω) mode.
3. Locate the motor windings, which are usually connected to three pins (1, 2, and 3).
4. Measure the resistance across different combinations of pins. Specifically, measure the resistance between pins 1 and 2, pins 2 and 3, and pins 1 and 3.
5. The normal range for the motor winding resistance is typically between 8.5 and 14.0 Ω. Ensure that the measurements fall within this range.
6. If the multimeter readings fall outside the specified range, it indicates a potential issue with the motor windings.
7. In such a case, further diagnosis or repair might be necessary, and it is recommended to consult a professional technician or seek assistance from the manufacturer’s support team.

By performing these steps, you can effectively check if the motor windings are functioning properly, ensuring the motor’s overall performance and efficiency.

What should be checked on the CCU and MCU for line voltage?

When checking the line voltage on the CCU (Central Control Unit) and MCU (Motor Control Unit), there are several components that need to be examined. First, measure the voltage across pins 1 and 2 of the IF2 connector on the CCU. Make sure your meter is set to measure VDC (Volts Direct Current).

Next, check for a +5V DC (positive 5 volts direct current) between connector UI7 pins 7 (GND – ground) and pin 2 (VCC – voltage supply) on the CCU. To do this, connect the red test lead of your meter to VCC.

Another measurement to take is the +12V DC (positive 12 volts direct current) across connector UI7 pins 3 and 2 on the CCU. Again, connect the red test lead of your meter to VCC.

To further troubleshoot the issue, unplug the machine and check if the basket turns freely. Ensure that all connectors are securely fastened on the MS2 and MI3 ports of the MCU.

Additionally, disconnect the motor harness connector from the MCU and measure the motor windings across pins 1-2, 2-3, and 1-3. The standard resistance range for these measurements should be between 8.5 and 14.0 Ω (ohms).

Why is the washing machine not progressing to C03 mode in diagnostic mode?

To understand why the washing machine is not progressing to C03 diagnostic mode, it is important to consider the logic of how the machine operates. Merely reading wiring diagrams might not provide a satisfactory explanation without comprehending how the various components of the machine work together.

When encountering issues such as a failure in the MCU (Microcontroller Unit) or the speed pickup, it is necessary to delve into the intricacies of the machine’s CPU (Central Processing Unit) logic. The CPU logic determines whether the machine allows progression into the C03 diagnostic mode under such circumstances.

Simply put, if the MCU or speed pickup has indeed failed, it is crucial to examine whether the CPU logic is programmed to permit entry into the C03 diagnostic mode. This logic ensures that the machine can accurately diagnose and troubleshoot any malfunctions it may be experiencing.

Therefore, a thorough understanding of the machine’s logic and the interplay between its various components is indispensable when investigating the reason behind the washing machine’s inability to progress to C03 mode during diagnostic operations.

Will the door lock if the door switch is defective?

If the door switch is defective, there is a possibility that the door may not lock properly. The locking mechanism of the door relies on the functionality of the switch to engage and secure the door. Therefore, a faulty door switch could potentially prevent the door from locking as intended.

What is the model number of the washing machine?

The model number of the washing machine is WFW94HEXW1.

What error code did the user receive after the new problem occurred?

What conclusion did the user come to regarding the need for a replacement part?

The user is coming to the conclusion that they may need to replace the CCU (Central Control Unit) as well.

What does the F05 E02 error code correspond to?

The F05 E02 error code corresponds to a door lock problem.

What error code did the user receive after the new problem occurred?

The user received the F05 E02 error code.

It is important to note that the user received a specific error code after the new problem occurred. The error code they encountered was F05 E02, which corresponds to a door lock problem. This error code suggests that there may be an issue with the door lock mechanism of the washer. It is worth considering the possibility that the door lock needs to be replaced or repaired in order to resolve this problem. However, it is also worth noting that the user has come to the conclusion that the CCU (Central Control Unit) may need to be replaced as well. This indicates that there could be multiple factors contributing to the door lock problem. Therefore, it would be advisable to thoroughly inspect both the door lock mechanism and the CCU to accurately diagnose and address the issue at hand.

Closing Thought On the Whirlpool Duet Washer Diagnostic Mode 

In summary, it takes a set of three keys that are neither POWER, START, STOP, PAUSE or CANCEL LOCK to put a Whirlpool duet washer in diagnostic mode. 

But as the above guide shows, you must consider if you have a duet sport or front loader washer, as that dictates what buttons not to press. And once you have the codes, you can look them up to see what it means and try clearing them. 

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